>> let's check in with mike. starting off with fog this morning. >> absolutely, fog this morning and that means, it's not going to be hot everywhere. if you take a look at the 24-hour temperature change, it's going to be minimum around fremont, santa rosa, concord a little bit warmer and oakland, san jose and san francisco, 4-6 degrees warmer. temperatures today, san francisco and oakland, pretty mild mid to upper 70s. as you head away from the water, fremont and san jose, in the upper 80s to mid on upper 90s around santa rosa and concord. some areas could see triple-digits. it could be the last day of this heat. it was very busy night for bay area firefighters, house fire, apartment fires and grass fires caused by 4th of july celebrations. amy hollyfield is live in berkeley where an apartment building burned.